206433065 has 4 divisors (see below), whose sum is σ = 247719684. Its totient is φ = 165146448.

The previous prime is 206433037. The next prime is 206433077. The reversal of 206433065 is 560334602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 160478224 + 45954841 = 12668^2 + 6779^2 .

It is a cyclic number.

It is not a de Polignac number, because 206433065 - 2²⁰ = 205384489 is a prime.

It is a super-2 number, since 2×206433065² = 85229220650588450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20643302 + ... + 20643311.

It is an arithmetic number, because the mean of its divisors is an integer number (61929921).

Almost surely, 2^206433065 is an apocalyptic number.

It is an amenable number.

206433065 is a deficient number, since it is larger than the sum of its proper divisors (41286619).

206433065 is an equidigital number, since it uses as much as digits as its factorization.

206433065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41286618.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 206433065 is about 14367.7787079284. The cubic root of 206433065 is about 591.0076289070.

Adding to 206433065 its reverse (560334602), we get a palindrome (766767667).

The spelling of 206433065 in words is "two hundred six million, four hundred thirty-three thousand, sixty-five".